View the photos from the Blues' group stage success
Pompey fought from behind to secure a 3-2 victory over Tottenham U21s in the Checkatrade Trophy.
The result ensured they finished top of Southern Group A and are guaranteed a home tie in the second round.
Phoenix Patterson opened the scoring for the visitors, only for Andre Green to level after the break with his first goal for the club.
Substitutes Gareth Evans and Oli Hawkins gave the Blues a commanding lead, before Harvey White's late free-kick reduced Spurs' deficit.